Grill unit



FIG. 1 is a front perspective view of a grill unit showing my new design;

FIG. 2 is a side view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a side view of the opposite side of FIG. 2;

FIG. 5 is a front view thereof;

FIG. 6 is a rear view thereof; and,

FIG. 7 is a bottom view thereof.

The details shown in broken lines form no part of the claimed design. 

CLAIM The ornamental design for a grill unit, as shown and described. 